Sign In with AppleBy using Snow-Forecast, you agree to our Terms & Services.
Don't have an account? Join now
Alternatively, you can now use your Outside account to sign in to any brand in the Outside digital ecosystem, including Snow-Forecast, Surf-Forecast, and Mountain-Forecast.
Osa Weather (Next 3 days): The snow forecast for Osa is: Light rain (total 4.0mm), mostly falling on Mon morning. Very mild (max 13°C on Sun morning, min 1°C on Fri night). Wind will be generally light.
Osa Weather (Days 4-6): Mild with light rain (total 3.0mm) on Tue afternoon Becoming colder with a light covering of snow, mostly falling on Wed morning. Freeze-thaw conditions (max 9°C on Tue morning, min -5°C on Wed afternoon). Winds increasing (light winds from the WSW on Mon night, strong winds from the WNW by Wed afternoon).
| Resort | Snow Depth | Temp. (°C) | Wind (km/h) | Weather | ||
|---|---|---|---|---|---|---|
| Top Lift: | 1 |  | ||||
| Bottom Lift: | 2 | |
Latest snow reports near Osa:
Saturday 29 | Sunday 30 | Monday 1 | Tuesday 2 | Wednesday 3 | Thursday 4 | ||||||||||||||
night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | AM | PM | night | |
|  | | | | |  |  |  | |  | |  |  | | |  | | | |
clear | clear | clear | clear | clear | clear | some clouds | light rain | rain shwrs | clear | some clouds | light rain | light snow | light snow | light snow | light snow | snow shwrs | light snow | light snow | |
km/h | |||||||||||||||||||
Snow map |  |  |  |  |  |  |  | ||||||||||||
— | — | — | — | — | — | — | — | — | — | — | — | 1 | 4 | 2 | 3 | — | — | — | |
— | — | — | — | — | — | — | 2 | 2 | — | — | 2 | 1 | — | — | — | — | — | 1 | |
max °C | 2 | 9 | 9 | 5 | 13 | 13 | 8 | 11 | 11 | 6 | 9 | 6 | 4 | -1 | -2 | -2 | 0 | 0 | 2 |
min °C | 1 | 6 | 5 | 5 | 9 | 8 | 7 | 10 | 8 | 5 | 8 | 5 | -2 | -1 | -5 | -5 | -1 | 0 | 0 |
1 | 5 | 2 | 2 | 7 | 6 | 4 | 7 | 6 | 2 | 6 | 2 | -10 | -8 | -15 | -14 | -8 | -7 | -5 | |
76 | 48 | 44 | 61 | 78 | 70 | 83 | 90 | 82 | 59 | 60 | 91 | 85 | 95 | 87 | 87 | 85 | 82 | 97 | |
1250 | 2150 | 2600 | 2950 | 2800 | 2750 | 2700 | 2500 | 2400 | 2650 | 2300 | 1550 | 800 | 500 | 350 | 200 | 500 | 700 | 800 | |
 | — | 6:56 | — | — | 6:58 | — | — | 6:58 | — | — | 7:00 | — | — | 7:01 | — | — | 7:01 | — | — |
 | — | — | 5:00 | — | — | 5:00 | — | — | 5:00 | — | — | 5:00 | — | — | 4:59 | — | — | 4:59 | — |
Light rain (total 4.0mm), mostly falling on Mon morning. Very mild (max 13°C on Sun morning, min 1°C on Fri night). Wind will be generally light.
Mild with light rain (total 3.0mm) on Tue afternoon Becoming colder with a light covering of snow, mostly falling on Wed morning. Freeze-thaw conditions (max 9°C on Tue morning, min -5°C on Wed afternoon). Winds increasing (light winds from the WSW on Mon night, strong winds from the WNW by Wed afternoon).
Latest snow reports near Osa:
| Top snow depth: | — |
|---|---|
| Bottom snow depth: | — |
| Fresh snowfall depth: | — |
| Last snowfall: | 18 Nov 2025 |
| Snow Alerts | Create Alert |
0.0 | Bluebird Powder days Fresh snow, mostly sunny, light wind. |
|---|---|
0.0 | Powder days Fresh snow, limited sun, any wind. |
0.0 | Bluebird days Average snow, mostly sunny, light wind. |
The above table gives the weather forecast for Osa at the specific elevation of 700 m. Our sophisticated weather models allow us to provide snow forecasts for the top, middle and bottom ski stations of Osa. To access the weather forecasts for the other elevations, use the tab navigation above the table. For a wider view of the weather, check out the Weather Map of Japan.
Click here to read further information on freezing levels and how we forecast our temperatures.
Snow Report
Webcams
Ski Resort Guide
Snow History
Snow Alerts
Sign up or Login to access
Nearest